Thread operated stop motion in



May 24, 1949. v. M. J. ANCET THREAD OPERATED STOP MOTION IN CIRCULAR LOOMS 2 Sheets-Sheet 1 Original Filed April 13, 1946 In 100 Z011 jg [3y o M ughug!- L INVENTOR.

Vaior [Yaw'e Joseph [Intel May 24, 1949.]

VIM. J; ANCYET THREAD OPERATED STOP MOTION IN CIRCULAR LOOM S 2 Sheets-Sheet 2 Original Filed April 13, 1946' the inner sheet of the warp threads of the shed and sweep over that part of the top of frame 3, that is occupied by the detector member i, when it has been swung to horizontal position.

The pivot pin I9 of each finger [8 projects above the plate It] and carries a hook H. The hooks of the two fingers are connected by a spring 22, which tends to align the hooks and thus maintain the fingers I8 in the desired position with reference to plate ill. A pair of stop pins 23 project upwardlyfromrplate lil dnwposition-to-' be engaged by hooks zl' 'and limit the rotational movement of the hooks and pins in one direction,

while permitting such movement in the opposite direction.

The central portion of the spring 22 is rep-laoeda:

by a contact member or contact 24, which lies beneath a two-pronged terminalimembenor ter minal 25 carried by the lower end ore boltfT mounted in an opening in a cover 26,'which fits into a peripheral groove in the edge. ofiplatemrlt 's and, with it, forms a drum. Asa -esters oven the end of bolt 21 and is connected by spring blade 29 to a post 38, which is mounted--in an opening in plate l2 and insulated therefrom. Current is supplied .to the post 3!] through a terminal SI and, when contact member 24"isii1r hook of the finger and, at the other end, to a fixed pin on plate I0. When a single finger is employed, the terminal member 25 need have only a single prong.

I claim:

1. A weft stop motion for use in a loom having a shuttle assembly and means for advancing the assembly through a shed of warp threads, which comprises loom stopping means, a finger operabie to advance with the assembly and penetrate one sh'eetof warp threads-of the shed periodically adjacent the assembly, the finger also being movable to operate the loom stopping means, means for operating the finger, and a member mounted on -"the' assemblyand engaging the Weft thread leaving the shuttle and held thereby as long as the. thread is under tension, the member biased toward a position; in which it intercepts and causesmovement. of the finger to operate the loom stopping means.

29 A wettstop motion for use in a loom having a shuttle-assembly and means for advancing the assembly through a shed or warp threads, which contact with either prong of terminal 25;." the current passes fromterminal member 25 tocontact 24 and thence toground. The -closing .,of the circuit causes a flow of current, which. operates a relay (not shown) .which,.in turn, operates conventional means for stopping the loom.

The operationof the newweft. stop motiont-is as follows.

rotated. from plate In is carriedv around withlthei drum,

and, as the finger.approachesthe inner-sheet of the shed, it penetrates that sheetand sweeps over the top of frame 3. During such movement" I of the fingers, the spring v22 Lholdsl the hookska 2| against their stop pins 23 andtcontact lies tional movement of the drum then causes" a swinging movement of thearrested finger 18 and its pivot pin l9 relative to. theplate l0,"and this movement causes-thehook 2li"of the finger to" swing away from its stop pin 23Jland bringth'e As the. shuttle ismoved along. its circular path through the shed of warptlireadsf during the operation of the1oom.,.thfldri1m, consisting of plate 10 and cover 26,- is continuously,-

Each finger l8 extending outwardly contact member 24 into engagement Withone of the prongs of terminal .25. The circuit, bywhich 1. the loom stopping means is actuated,is thus.

established and the loom is brought to -rest.

In the stop motion described thel swinging ,Off one of the fingers l8, caused by its engagement" with the flange 6 ofmember I, when the latter has moved to horizontal position upon'breaking... of the weft thread, closes a circuit, which effects" the stopping of the loom, but the swinging'of the fingers can be employed, if desired, .toactuate mechanical means for stopping theloom. Also,

the actuation of the loom-stopping means'maybe accomplished by a translational-rather.rthana rotational movement of either finger. The mesh anism described includes a pair vof fingersmbut. a single finger maybe employed; :in whichlcase thelspring 22. is connected atsone:=-end,-to the ing. theshuttle and held. thereby as long as the thread is under. tension, the member being biased toward a position, in.,which..it intercepts and causes a movement of the finger to operate the loom stopping means.

3. A weft stop motion for use in a loomhaving a shuttleassembly andmeansfor advancing. the

assembly through a shed of warp threads, which comprises a rotary element carried bythe advancing means outsidethe shed adjacent the assembly, means for rotating the element, a

finger carried by the element and periodically... penetrating one sheet of warp threads of the.

shed adjacent the assembly as the element rotates, the finger being movably mounted on the element, loom. stopping means actuated by movement of the finger relative to theelement, and

a member. mounted on the assembly and engag- 'ing the weft thread leaving the shuttle and held thereby as long as thethread is under tension,

the member being biased toward a position, in

which it intercepts'saidfinger and causes move- I ment thereof relative to the element, as the fingerv is carried along with-the element.

4. "A weft stop motion for use in a loom having a shuttle assembly and means for advancing the assembly through a shed of warp'threads, which comprises a rotary element carried by the ad-.

vancing means outside the shed adjacent the assembly, means for rotating the element, a fingercarried by the element and projecting beyond the periphery thereof, the. finger' periodically penetrating one sheet of warp threadsof the shed adjacent the assembly, as the element rotates, and

being mounted for movement relative to the element, loom stopping means actuated by'move ment of the finger relative to the e1emen't,'and a member mounted on the assembly and engaging and held in one position by the weft thread.

leaving the shuttle, as long as the thread is under tension, the member being biased toward'a second position and moving thereto, when the thread breaks, the member in said second position intercepting and causing movement of the finger relative to the element, as the finger is carried along with the element.

5. A weft stop motion for use in a loom having a shuttle assembly and means for advancing the assembly through a shed of warp threads, said means including a roller rotating in contact with one sheet of warp threads of the shed, which comprises a rotary element carried by the advancing means outside the shed adjacent the shuttle assembly and rotated by said roller, a finger carried by the element and periodically penetrating one sheet of warp threads of the shed adjacent the assembly, as the element rotates, the finger being movably mounted on the element, loom stopping means actuated by movement of the finger relative to the element, and a member mounted on the assembly and engaging the weft thread leaving the shuttle and held thereby as long as the thread is under tension, the member being biased toward a position, in which it intercepts said finger and causes movement thereof relative to the element, as the finger is carried along with the element.

6. A weft stop motion for use in a loom having a shuttle assembly and means for advancing the assembly through a shed of warp threads, which comprises a rotary element carried by the advancing means outside the shed adjacent the assembly, means for rotating the element, a finger pivotally mounted on said element and normally held against pivotal movement by spring means, the finger projecting beyond the element and periodically penetrating one sheet of warp threads of the shed adjacent the assembly, as the element rotates, loom stopping means actuated by pivotal movement of the finger, and a member mounted on the assembly and engaging and held in one position by the weft thread leaving the shuttle, as long as the thread is under tension, the member being biased toward a position, in which it is engaged by and causes pivotal movement of the finger, as the latter is moved with the element.

'7. A weft stop motion for use in a loom having a shuttle assembly and means for advancing the assembly through a shed of warp threads, which comprises a hollow member mounted for rotary movement, a loom stopping circuit, including a stationary and a movable contact within the member, a finger pivotally mounted on the member and connected to the movable contact, the finger being normally held against pivotal movement and operating, upon such movement, to move the movable contact into engagement with the stationary contact and establish the circuit to stop the loom, the finger projecting beyond the element and periodically penetrating one sheet of warp threads of the shed adjacent the assembly, as the element rotates, and a member mounted on the assembly and engaging and held in one position by the weft thread leaving the shuttle, as long as the thread is under tension, the memher being biased toward a position, in which it is engaged by and causes pivotal movement of the finger, as the latter is rotated with the element.

8. A weft stop motion for use in a loom having a shuttle assembly and means for advancing the assembly through a shed of warp threads, which comprises a rotary element carried by the advancing means outside the shed adjacent the assembly, means for rotating the element, a finger carried by the element and periodically penetrating one sheet of warp threads of the shed adjacent the assembly, as the element rotates, the finger being movably mounted on the element, loom stopping means actuated by movement of the finger relative to the element, and a fixed and a spring-pressed movable member mounted on the assembly, the weft thread leaving the shuttle being led between said members and holding the movable member against movement, as long as the thread is under tension, the movable member being urged by its spring toward a position, in which it intercepts and causes movement of the finger relative to the element, as the finger is rotated with the element.

9. A weft stop motion for use in a circular loom having a shuttle assembly and means for advancing the assembly along a circular path through a shed of warp threads, which comprises loom stopping means, a rotary element carried by the advancing means adjacent the assembly and along a circular path close to that traveled by the assembly, means for rotating the element, a finger carried by the element and periodically penetrating the inner sheet of warp threads of the shed, as the element rotates, the finger being mounted for movement relative to the element and operating the loom stopping means in such movement, and a member mounted on the assembly and held in one position by the weft thread leaving the shuttle, so long as the thread is under tension, the member being biased toward a second position, in which it is engaged by the finger, as it rotates with the element, and causes a movement of the finger relative to the element.

VICTOR MARIE JOSEPH ANCET.

No references cited. 

